Apparatus for measuring and recording the quantity of flow of liquids.



w. PATERSON. APPARATUS FOR MEASURING AND RECORDING THE QUANTITY OF FLOWOF LIQUIDS. APPLlCATlON FlLED MAR. 18' 9 13- 7 1,239,300, Patentedsept.4, 191?.

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INVENTOR wmEssgs 5 V dfiz/flu 4% ATTDRNEY Y W. PATERSON. APPARATUS FORMEASURING AND RECORDING THE QUANTITY OF FLOW 0F LIQUIDS.

APPLI CATION FILED MAR. 18. 1913- Patented Sept. 4,- 1917.

5 SHEETSSHEET 2.

INVENTOR ATfORNEY Q ZZZ f WITNESSES w. PATERSON. APPARATUS FOR MEASURINGAND RECORDING THE QUANTITY OF FLOW 0F LIQUIDS.

' APPLICATION HLED MAR.18.1913- 1,2 39,300. PatentedSept. 4,1917.

5 SHEETSSHEE'I' 3.

64mm /;M INYENTOR I'IWESSES d/{M W. PATERSON. APPARATUS FOR MEASURINGAND RECORDING THE QUANTITY OF FLOW 0F LIOUIDS.

' APPLICATION FILED MAR. 18. I913- PatentedSept. 4,1917.

5 SHEETS-SREET 4.

INVENTOR WITNESSES ATTORNEY w. PATERSON. NG AND RECORDING THE QUANTITYAPPLICATION FILED MAR.18. 1913.

OF now 0F LlQUl DS.

APPARATUS FOR MEASUBI 1,239,300.

Patented Sept. 4', 1917.

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ATTORNEY %Mzw/@ v A 'INVENTOR, I v MM/ ag A WITNESSES TUNITED STATESPATENT OFFICE;

WILLIAM PA'IERSON, OF LONDON, ENGLAND.

APPARATUS FOR MEASURING AND RECORDING THE QUANTITY OF FLOW OF LIQUIDS.

Application filed March 18, 1513/ To all whom it may concern:

Be it known that I, VVILLIAM PATERSON,

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Ireland, and residing at Amberley House, Norfolk street,Strand, London,W. C., England, have invented certain new and use ful Improved Apparatusfor Measuring and Recording the Quantity of Flow of Liquids, of whichthe following is a specification.

This invention relates to improvements in apparatus for measuring andrecording the quantity of a flow of liquid of the type in which theliquid is passed over a weir or through an orifice and the measuring andrecording instruments operated by means of a float which is subject tovariations in the'level of the liquid above the Weir or orifice.

These instruments are based upon the well-known fact that the quantityof liquid flowing over a weir or through n orifice at any particulartime is a function of the head of liquid above the lip of the weir orabove the orifice at that time, but that except in the case of veryspecial orifices'which introduce serious errors when put into practicaluse the quantity never varies proportionately to the head of liquid.

Such apparatus usually consists of a cam surface wound in a helicalmanner upon a drum or disk, the curved surface of the cam being shapedto suit the curve giving the relation between the. quantity of liquidpassing and the head'of liquid above the weir and engaging a marker orthe like by means of which a diagram giving a record of the quantity offlow of liquid may be obtained. 7 I

I The frictional resistance of such apparatus due to the number ofworking parts therein is 'such that errors in the reading of theinstrument are certain to be introduced;

The object of the present invention is to provide a simple and eflicientform of apparatus in which the above disadvantages are obviated and theinvention consists in apparatus comprising a cam adapted to, be moveddirectly in a longitudinal direction the float with which the apparatusfisalso provided and to actuate a marker, pointer or the like whereby areading upon scale o ap m nt r o d upon a h rt Specification of LettersPatent.

'infter referred vide' any suitable form of Patented Sept. 4; 1917.Serial No. 755,066.

may be obtained showing l quid passing.

The invention also consists in the prothe amount of vision ofmultiplying gear of any suitable form for the purpose of increasing thesize of the chart given by the marker when desired.

liereina fter more particularly referred to.

The accompanying drawings illustrate two modes of-carrying out theinvention.

Figures 1 and 2 are respectivelya'front elevation and a side elevationshowing one convenient form ofapparatus constructed in accordance withthe invention.

' Figs. 3 and 4: are similar views illustrating a modified form ofapparatus while 7 Fig. 5 is a sectional elevation on a somewhat smallscale illustrating to. Figs. 6 and 7 are two views illustrating amodified form of invention.

The invention also comprises other details a detail here- I deviceaccording to the In carrying my invention ihto effect in one convenientmanner when constructing apparatus for measuring the flow of water overa weir .I provide a float chamber Z (Fig. 5) in communication in anyusual manner with the weir so in the position of the float l is ameasure' of the variation of the head of liquid above the weir. Thefloat rod a in the example shown is connected by any suitable form ofcoupling?) to a rod 0 which carries in any suitable manner a flattenedcam d, and in order that the" float may be capable of moving freelywithout permitting the escape of fumes or vapors with the recording gearhereinafter described I prefer to proliquid seal or the like inconnection with the'float rod. one such device being illustrated in Fig.5 and comprising a tube V, closed at its upper end and carried by theadapted to dip into an annular vessel W containing water or otherconvenient liquid. Any fumes or vapors passing up the tube X withinwhich the float .rod is located will that the variation float rod. and Ibe trapped between the tube V and the grooved pulleys e mounted insuitable brackets f, the outer ends of which are provided with slotsthrough which the flattened cam (Z can pass while the brackets also havethe effect of preventing rotation of the cam rod 0. The cam (Z isprovided with a curved surface shaped to suit the curve giving therelation between the quantity of liquid passing and the head of liquidabove the weir and adapted to bear against a carriage g upon which ismounted a suitable pen or marker h for giving a chart upon the drum i inthe usual manner.

The carriage is preferably provided with a hardened steel or othersuitable anti-friction roller which is made to bear constantly againstthe cam surface by means of a spring or a counterweight Z or othersuitable device. The marker carriage g may be mounted in any suitablemanner as far example upon a pair of guides or rods 0% of silver steelor other suitable material, or the carriage may be provided with rollersor like anti-friction. devices engaging suitable slides or guides.

In the device il ustrated in Figs. 1 and Z multiplying gear isintroduced for the purpose of increasing the size of chart given by themarker or pointer h and in one convenient construction the carriage ghas mounted thereon an idle pinion n adapted to engage with both a fixedrack 0 and a movable rack p, the latter carrying the pointer or marker hand being conveniently guided by rollers or other anti-friction means onextensions 7" of the carriage g and a similar extension on the back offixed bracket f.

It will be clear that when the float rod 60 with its attached cam rod 0is in the zero position the pull of the balance Weight Z will bring thesliding carriage 9 into such position that its rollers 70 bear againstthe face of the cam while the marker it will be in its zero position inrelation to the drum or chart i. As the float rises the carriage g andwith it the pen h is moved into a position bearing a direct ratio to thequantity of liquid passing over the weir or through the orifice inconnection with which the indicating apparatus is employed, and inv theform illustrated in Fig. 1 it will be clear that the movement of themarker his double that of the sliding carriage 9 so that a larger chartis thereby obtained.

Figs. 3 and 4 illustrate a similar form of apparatus to thathereinbefore described in which the multiplying gear is omitted, themovement of the marker in this case being equal to that of the slidingcarriage g.

In the modification illustrated in Figs. 6 and 7 the counter-weight formaintaining contact between the carriage g and the cam cl takes the formof a meter or registering mechanism V of any suitable form andconstruction, the weight of which is so proportioned that it may be usedinterchangeably with an ordinary counter-weight, when it is not desiredthat the mechanism shall be fitted with a meter.

The actuating spindle W of the registering mechanism carries a smallfriction wheel or disk X preferably made as light as possible and of anysuitable material and adapted to engage a disk Z of suitable size andformed from any convenient metal or material and adapted to be rotatedat a constant speed preferably by means of suitable clockwork mechanism1 (Fig. 7).

The meter V is provided with any suitable form of adjustable suspensionsuch as a milled-headed screw 2 so that its position may be regulated insuch a manner that when the marker h and pointer u are i the zeroposition the disk or wheel X is arranged centrally with respect to thedisk Z, so that any latter to the registering mechanism.

The meter may be guided in any suitable manner as for example by meansof the fixed guide 3 engaging with lugs 4. upon the meter, and in orderto insure the necessary contact between the disks 00 and 2 I may, ifdesired, suspend the meter in such a manner that the cord or the like 5is slightly out of the vertical, so that the weight of the registeringmechanism is brought into play to exert the necessary contact.

It will be readily understood that as the carriage g is moved away fromits Zero position under the influence of the cam d the meter will begradually raised in such a manner that the distance at any particulartime of the disk :1? from the center of the disk 2 and therefore thenumber of revolutions imparted to the registering mechanism in unittime, will be a measure of the quantity of liquid passing through theapparatus at that time, so that the meter will give the total quantiy ofliquid which has passed through the apparatus in any given period oftime.

In any construction I may, if desired, provide a graduated scale 2? inconjunction with a pointer 10 to indicate at any moment the quantity ofliquid passing, the pointer being provided with a pin engaging a slottedor other collar upon the sliding carriage or being linked to the slidingcarriage.

I do not confine my invention to its application hereinbefore given byway ofrexample nor to the details of construction described as these maybe variously modified to suit varying requirements and I may employ myinvention with equal effect and like advantage other measurementswherein a like vcomensating effect is to be obtained due to the factthat the curve upon which the measurements are based is not a straightline curve.

movement is imparted by the Having now described my invention, what Iclaim as new and desire to secure by Letters Patent is In an apparatusof the character described the combination of a float subject tovariations in the level of liquid passing over a weir or through anorifice, a recording cylinder, a marker in contact therewith, a cam foractuating said marker rigidly secured to and movable longitudinally withsaid float and having a surface of such form that the movement of themarker is directly proportional to the volume of liquid passing, aslidable carriage in contact with said cam, an idle pinion mounted uponsaid carriage, a fixed rack in engagement with said pinion and anoppositely disposed movable rack also in engagement with said pinion andcarrying said marker.

2. In an apparatus of the character described the combination of a floatsubject to variations in the level of liquid passing over a weir orthrough an orifice, a slidable iarriage, recording mechanism carried bysaid carriage, a cam in contact with said carriage rigidly secured toand movable longitudinally with said float and of such a contour thatthe movement of said carriage is directly proportional to the volume ofliquid passing and a counter-weight for maintaining contact between saidcarriage and said cam.

3. In an apparatus of the scribed the combination of a to variations inthe level over a weir or through an character defloat subject of liquidpassing orifice, a slidable carriage, a recorder carried thereby, a camin contact with said carriage rigidly secured to and movablelongitudinally with said float and of such a form that the movement ofthe carriage is directly proportional to the volume of liquid passing,and a counterweight for maintaining contact between said carriage andsaid cam comprising registering mechanism for indicating the totalamount of liquid passing through the apparatus.

In an apparatus of the scribed the combination of a float subject tovariations in the level of liquid passing over a weir or through anorifice, a slidable carriage upon which is mounted a recording marker, acam in contact with said carriage rigidly nally with said float and ofsuch a form that the movement of the carriage is directly proportionalto the volume of liquid passing, and means for maintaining contactbetween the carriage and the cam, said means comprising registeringmechanism connected with said carriage, a disk mounted upon the shaft ofsaid registering mechanism and a second disk in engagement with thefirst disk, and means for'rotating said second disk at a uniform speed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

WILLIAM PATERSON.

character de- Witnesses:

WILFRED L. PARTINGTON, ERNEST WM. PRATT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

secured to and movable longitudi--

